Earlier quoted context omitted.
People used to call me a ninny all the time, I don't think it should be banned though. I agree though, imo the word you're thinking of is probably banned and the linked list is not a complete/exhaustive one.
The n-word is banned. Apparently one can test for this one self by searching her: https://hashpix.herokuapp.com/ If the word is banned you will get an error message saying "Instagram: (400) APINotAllowedError-This tag cannot be viewed" at the top.
I can confirm this. The search term alluded to, as well as all hashtags stemming from it, have been auto-tagged as nsfw in HashPix as well.
OT: We have just managed to carry out a conversation about a word that was not even mentioned once within the conversation itself. And yet, each one of us knows exactly which word we are alluding to. Voldemort, anyone? :)